Apparatus for the manufacture of shoes with an inner leg, particularly ski-boots



Apnl 30, 1968 o. SCHMIDT 3,380,123

APPARATUS FOR THE MANUFACTURE OF SHOES WITH AN INNER LEG, PARTICULARLYsKI-BooTs Filed March 3, 1966 United States Patent 3,380,123 APPARATUSFOR THE MANUFACTURE OF SHOES WITH AN INNER LEG, PARTICU- LARLY SKI-BOOTSOskar Schmidt, Weyrgasse 6, Vienna, Austria Filed Mar. 3, 1966, Ser. No.531,585 Claims priority, application Austria, Mar. 8, 1965,

2,052/65 7 Claims. (Cl. lit-42) The present invention relates to anapparatus for the manufacture of shoes with an inner leg, particularlyskiboots.

The apparatus is adapted for the performance of a method for themanufacture of such boots, according to which an inner leg mounted on alast is provided with an outer shoe by insertion during the manufacturein a hollow mold of a liquid and paste-like, respectively, syntheticmaterialand rubber mass, respectively.

It is one object of the present invention to provide an apparatus forthe manufacture of shoes with an inner leg, particularly ski-boots,which comprises a preferably multi-port hollow mold, into which a lastcarrying the inner leg of the shoe, as well as a hollow member coveringthe leg to a desired extent and receiving corresponding parts of thelatter.

It is another object of the present invention to provide an apparatusfor the manufacture of shoes with an inner leg, particularly ski-boots,wherein the hollow mold is formed of two half bowls and a bottom partequipped preferably with a receiving opening.

If the above stated method is to be performed by applying dilferentmasses for the outer leg and sole, in accordance with the furtherdevelopment of the present invention, the bottom part can be arrangedfor a variation of its hollowvolume of the mold displaceably and/orexchangeably.

The last carrying the inner leg is suitably pressable to the hollow partby clamping means as, for instance, a pulling cord, a pulling rod andthe like, also magnetically.

With these and other objects in view which will become apparent from thefollowing detailed description, the present invention will be clearlyunderstood in connection with the accompanying drawing, in which:

FIGURE 1 is a section along the lines A-B of FIG. 2; and

FIG. 2 is a section along the lines C-D of FIG. 1.

Referring now to the drawing, the apparatus comprises a last 1 on whichan inner leg 2 of leather is mounted. While it is suitable to combinethe leg leather with the inner sole by means of a seam, also any otherknown expedient can be applied. A hollow member 6 is mounted on the legor to say more exactly, on the inner leg disposed thereon, whereby thelast is pressed to the hollow member 6 by means of any tensioning means8. Thus, a sealing point and a sealing edge 9, respectively, results upto which the leg leather is uncovered and from which further portions ofthe leather are covered and are received in the hollow 7. The mentionedparts are formed of two half bowls 3 and 4 and the body portion 5. Thehalf bowl 3, shown in FIG. 1, is not cross-hatched, since the engagingface of the two half bowls 3 and 4 coincides with the section plane A-B.The hollow portion 6 and the non-covered part of the inner leg 2 areshown in elevation. The bottom portion 5 has a filling opening throughwhich liquid and paste-like, respectively, synthetic material or rubbermass can be fed into the mold.

In accordance with the usual 'technic, the surfaces of the molds comingin contact with the penetrating synthetic material and the hollow part 6are treated with a separating agent, in order to avoid an adhesion ofthe 5 synthetic material. It should be mentioned, that it is possibleand advantageous by means of a proper formation of the half bowls andunder certain circumstances by the arrangement of insertion wedges orthe like, to form the outer shoe within the range of the instep into 10separate, preferably overlapping parts. If, in accordance with themanufacturing process, the hollow mold is opened, the hollow part 6 canbe removed from the formed shoe. The deformed shoe thus shows an innerleg which is non-removably connected in the shown embodiment up to theheight of the ball with the outer leg. It is to be understood that bythe formation of the hollow 7 and as a matter of fact of the hollow part6, the connecting line between the inner leg and the outer leg of theshoe can be produced in any desired manner.

The apparatus in accordance with the present inven tion permits also theapplication of the method in the simplest manner with different massesfrom the outer leg and for the sole, respectively. If, namely the bottomportion 5 is designed displaceably and exchangeably relative to itspenetration depth, the outer leg can be formed in a first process stepand then after corresponding adjustment of the bottom portion 5 and theexchange of the inner sole, respectively. Furthermore, by insertionofparts and, if desirable, a stiffening for the sole in the mold, theseparts can be simultaneously secured on the shoe or in the shoe duringits manufacture. Even if the arrangement of the filling opening 10 inthe bottom portion 5 appears particularly advantageous, one or aplurality of such openings can be of course provided at another point ofthe hollow mold.

While I have disclosed one embodiment of the present invention, it is tobe understood that this embodiment is given by example only and not in alimiting sense, the scope of the present invention being deter- 40 minedby the objects and the claims.

I claim:

1. An apparatus for the manufacture of shoes with an inner leg,particularly ski-boots, comprising a multi-part hollow mold,

a last carrying the inner leg of the shoe, and

a hollow part covering said leg to a predetermined extent and receivingcorresponding parts of said last, and

said last and said hollow part being insertable into said hollow mold.

2. The apparatus, as set forth in claim 1, wherein said hollow moldcomprises two half bowls and a bottom part having a filling opening.

3. The apparatus, as set forth in claim 2, which includes means fordisplacing said bottom part for variation of the hollow volume of saidhollow mold filled by said bottom part.

4. The apparatus, as set forth in claim 2, which includes means forexchanging said bottom part for variation of the hollow volume of saidhollow mold filled by said bottom part.

5. The apparatus as set forth in claim 1, which includes tensioningmeans for pressing said last to said hollow part. 6. The apparatus, asset forth in claim 5, wherein said tensioning means comprises a pullingcord.

3 4 7. The apparatus, as set forth in claim 5, wherein 3,160,921 12/1964Ludwig. said tensioning means comprises a pulling rod. 3,302,244 2/1967Ludwig.

FOREIGN PATENTS 849,917 9/1960 Great Britain.

References Cited UNITED STATES PATENTS 5 2,357,360 9/1944 Rollmann. J.HOWARD FLINT, IR., Primary Examiner.

3,067,467 12/1962 Yanush -1846X

1. AN APPARATUS FOR THE MANUFACTURE OF SHOES WITH AN INNER LEG,PARTICULARLY SKI-BOOTS, COMPRISING A MULTI-PART HOLLOW MOLD, A LASTCARRYING THE INNER LEG OF THE SHOE, AND A HOLLOW PART COVERING SAID LEGTO A PREDETERMINED EXTENT AND RECEIVING CORRESPONDING PARTS OF SAIDLAST, AND SAID LAST AND SAID HOLLOW PART BEING INSERTABLE INTO SAIDHOLLOW MOLD.